“Dracula solves crimes!” he announced, before adding: “I just made that up it’s not that, it’s not that!”

He then cheekily added: “That’s quite good though, isn’t it?”

Moffat also revealed that, while Dracula is his first project to be announced post-Doctor Who, work on the project will “not [begin] immediately”.

“I’ve got other plans just before that, mostly involving a balcony and gin ‘n’ tonic!” he said.

Eamonn M. McCormack/Getty Images

He also hinted at plans for other original projects: “I’m still working on [Doctor Who] but once the head’s cleared, there’s a few things I’d like to do, a few ideas I’d like to do that are as far away from Doctor Who and Sherlock as I can manage. Not that I don’t love those things more than anything, because I do!”

Talks are underway with the BBC to air Dracula in the UK and, like Sherlock, it will be produced by Sue Vertue’s Hartswood Films.